23445312131550 has 96 divisors (see below), whose sum is σ = 58805410320000. Its totient is φ = 6181238309760.

The previous prime is 23445312131513. The next prime is 23445312131587. The reversal of 23445312131550 is 5513121354432.

It is an interprime number because it is at equal distance from previous prime (23445312131513) and next prime (23445312131587).

It is a junction number, because it is equal to n+sod(n) for n = 23445312131499 and 23445312131508.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 6545256 + ... + 9472644.

It is an arithmetic number, because the mean of its divisors is an integer number (612556357500).

Almost surely, 2^{23445312131550} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 23445312131550, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29402705160000).

23445312131550 is an abundant number, since it is smaller than the sum of its proper divisors (35360098188450).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

23445312131550 is a wasteful number, since it uses less digits than its factorization.

23445312131550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2928010 (or 2928005 counting only the distinct ones).

The product of its (nonzero) digits is 216000, while the sum is 39.

Adding to 23445312131550 its reverse (5513121354432), we get a palindrome (28958433485982).

The spelling of 23445312131550 in words is "twenty-three trillion, four hundred forty-five billion, three hundred twelve million, one hundred thirty-one thousand, five hundred fifty".